Super Tech System in Marvel

Ethan Ward lived an ordinary life—until the night he died saving a stranger from a runaway truck. His final thought was regret… and then darkness. But instead of oblivion, Ethan opens his eyes in a new world—the Marvel universe, a place where gods walk the streets, geniuses bend reality, and cosmic threats lurk behind every star. Reborn in a young, healthy body, he soon discovers his greatest gift: A Super-Tech System—an advanced AI-like interface capable of analyzing, replicating, upgrading, and even inventing futuristic technology far beyond anything Stark or Shuri have ever conceived. From creating adaptive nanotech armor to forging energy reactors small enough to fit in his palm, Ethan rapidly rises from an anonymous face in New York to a growing anomaly that both heroes and villains can’t ignore. — Description from novelcodex.org